Railway-track structure.



No. 729,059- PATENTEDMAY 26, 1903.

A. L. GEORGE.

RAILWAY TRACK STRUCTURE.

APPLICATION FILED DEO.,22, 1902.

H0 MODEL.

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UNrrED STATES iatented May 26, 1903.

PATENT OFFICE.

ARTHUR L. GEORGE, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

RAILWAY-TRACK STRUCTURE.

SPECIFICATION forming part Of Letters Patent N0. 729,059, dated May 26, 1903. Application filed December 22, 1902. Serial No. 136,097. (No modeli) To (all whom it may concern:

Be it known that I, ARTHUR L. GEORGE, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement in Railway-Track Structures, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention has relation to certain new and useful improvements in railway-track structures of that class which are provided with removable and replaceable portions or plates forming those portions of the structure which are subject to the greatest wear.

The object of my invention is to provide means of novel character for securing these renewable and replaceable portions or plates to the body portion of the structure, so constructed and arranged as to permit such portions to be readily removed and replaced from the street-surface without the necessity for taking up the entire structure and without disturbing the adjacent pavement.

With this object in View my invention consists in the combination, with the body portion of the structure, having a plate seat or pocket formed therein and a renewable portion or plate seated therein, said body portion and plate having oblique parallel wall keyseats, of solid parallel-sided keys adapted to be driven snugly and tightly in said seats to bind the plate in said pocket, together with a retaining and leveling material bedding the plate in said pocket and also holding the keys against looseness. I also provide the body portion of the structure with cores or openings leading from the under side thereof to the key-seats, so that by the application of a suitable drift to the upper ends of the keys they may be driven out of their seats to thereby release the plate.

My invention also consists in the novel construction and combination of parts, all substantially as hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure l is a plan view of a curve-cross or street-railway frog embodying my invention; Fig. 2, a section of the same on the line 2 2 of Fig. 1; Fig. 3, a perspective view of the plate removed, and Fig. 4a detail perspective view of one of the keys.

The letter A designates the body portion of the structure, having the rail extensions B and formed wit-h aseat or pocket for the tracksurfaced'wear-plate G. The latter is formed at each lateral edge with one or more downwardly and outwardly beveled key seats or bearings o, and the side walls are each formed with corresponding and parallel seats or bearings b.

D designates parallel-sided keys which are of such size as to enable them to be driven snugly and tightly in the said seats, and thus bind the plate in place. Inasmuch as the castings forming the plate and body portion will vary somewhat in different structures, and thus make it difficult to always provide a key which can be driven with the requisite snugness, it will generally be necessary to provide thin shims of varying thickness, which can be placed in the key-seats and against which the keys may be driven. r

F designates material, such as spelter or zinc, which beds and levels the plate in the pocket and also flows around and fills the openings or spaces at the sides of the keys left for the purpose and through which the material is poured in a liquid state. The keys are preferably formed with grooves, ricks, or corrugations d to enable the spelter to gain a suifioient hold on them to prevent them from working loose.

Leading upwardly from the under side of the body portion A to the bottoms of the keyseats are cores or openings H, so that by chipping the spelter from the upper ends of the keys a drift may be applied thereto. By sledging this drift the keys can be forced out through the openings H,which are made large enough for free clearance, and thus release the plate. To prevent the spelter or other retaining material from flowing out through these openings when it is poured, plugs I, of wood or clay, may be placed therein, as shown in Fig. 2.

While I have shown the invention as applied to a curve-cross or frog, it will be understood that it is equally applicable to all other track structures-sucl1 as switch structures, mates, girder-crossings, and the likein which it is desired to secure a removable portion or plate constituting those portions of the structure which are subject 'to the greatest wear. It will also be understood that the key seats or bearings maybe formed anywhere on the plate and body portion which is most convenient or desirable for the particular work in hand and that the plate and body portion may be variously shaped to provide such seats. Hence I do not wish to limit myself to the particular construction,arrange ment, and combination of parts which I have herein shown and described.

nation of a body portion having a seat or pocket, and a renewable track-surfaced portion or plate seated therein, said body portion and plate having parallel oblique keybearings separated by spaces or openings, solid parallel-faced keys seated in said openings and driven snugly between said bearings, and a retaining material bedding the plate and holding said keys against displacement, the said body portion having openings into or through which the keys may be driven to release them. 3. The combination, in a railway track structure, of a body portion, and a renewable portion or plate seated therein, of fasteningkeys driven obliquely between the said plate and the adjacent body portion and adapted to be released by driving them bodily downwardly out of their bearings, and means for holding said keys normally against displacement.

In testimony whereof I have ailixed my signature in presence of two witnesses.

ARTHUR L. GEORGE.

Witnesses:

LORETTO OOoNNELL, H. W. SMITH. 

